John Norman Newton (born 7 January 1959) is a British epidemiologist and public health expert.

[1] Newton was an academic epidemiologist at the University of Oxford, and the founding Chief Executive of the charity UK Biobank.

He was appointed as Regional Director of Public Health for NHS South Central in 2007.

[4] He has acted as an expert witness in epidemiology in relation to litigation since 1994, including on MMR and Autism, Norplant and Seroxat.

Newton was appointed Officer of the Order of the British Empire in the 2023 Birthday Honours for services to public health.